This motion shifts the frequency of the diffracted wave by Doppler effect.Dominique DelacourtMichel PapuchonJean-Paul PocholleUSUS4927245 * Aug 30, 1988 May 22, 1990 Thomson-Csf Frequency shifter for medium infrared range wave
The frequency is closer to the lower limit of the correlated range when the number of carbon atoms (i.e., n) is small. For example, the vibration occurs at 837 cm−1 for n-C4H10 and at 869 cm−1 for n-C5H12; it then stays at a fairly constant spectral region of 888-905 cm...
Therefore, the sum frequency of the two pulses is generated, resulting in an effective polarization rotation of the gate pulse, which is proportional to the electric field of the mid-IR range. This polarization rotation is analysed with an ellipsometer comprising a quarter-wave plate, a Wollaston...
Define Long-wave infrared. Long-wave infrared synonyms, Long-wave infrared pronunciation, Long-wave infrared translation, English dictionary definition of Long-wave infrared. adj. Abbr. IR 1. Of or relating to electromagnetic radiation between microwaves
Mid-infrared (IR) spectral region is of immense importance for astronomy, medical diagnosis, security and imaging due to the existence of the vibrational modes of many important molecules in this spectral range. Therefore, there is a particular interest
An IR spectrum is a graph of the absorbed energy versus the wavenumber (υ), which is the reciprocal of the wavelength (i.e., 1/λ) and is measured in units of cm− 1 and is proportional to the frequency or energy of the radiation—thus, the higher the wavenumber, the higher the...
We have observed an ultra-broadband frequency comb with a wavelength range of at least 0.35 to 4.4 μm in a ridge-waveguide-type periodically poled lithium niobate device. The PPLN waveguide is pumped by a 1.0–2.4 μm wide frequency comb with an average power of 120 mW generated using an...
Broadly tunable (402–535 nm) intracavity frequency-doubled Cr:LiSAF laser Article 03 January 2023 New function of the Yb3+ ion as an efficient emitter of persistent luminescence in the short-wave infrared Article Open access 03 March 2016 NIR Persistent Luminescence Chapter © 2024 Data...
Photodetectors that are sensitive in the shortwave-infrared (SWIR) range (1–2 µm) are of great interest for applications such as machine vision, autonomous driving and three-dimensional, night and adverse weather imaging, among others. Currently a
The absorption of light by a molecule at a frequency (or wavelength) that is a multiple of the fundamental frequency of a vibrational mode of that molecule. Particle image velocimetry A visual measurement technique used to obtain instantaneous velocity fields by tracking the movement of small partic...